/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

\*---------------------------------------------------------------------------*/

#include "LUscalarMatrix.H"

// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class Type>
void Foam::LUscalarMatrix::solve(Field<Type>& sourceSol) const
{
	if (Pstream::parRun())
	{
		Field<Type> completeSourceSol(n());

		if (Pstream::master())
		{
			typename Field<Type>::subField
			(
				completeSourceSol,
				sourceSol.size()
			).assign(sourceSol);

			for
			(
				int slave=Pstream::firstSlave();
				slave<=Pstream::lastSlave();
				slave++
			)
			{
				IPstream::read
				(
					Pstream::scheduled,
					slave,
					reinterpret_cast<char*>
					(
						&(completeSourceSol[procOffsets_[slave]])
					),
					(procOffsets_[slave + 1] - procOffsets_[slave])*sizeof(Type)
				);
			}
		}
		else
		{
			OPstream::write
			(
				Pstream::scheduled,
				Pstream::masterNo(),
				reinterpret_cast<const char*>(sourceSol.begin()),
				sourceSol.byteSize()
			);
		}

		if (Pstream::master())
		{
			LUBacksubstitute(*this, pivotIndices_, completeSourceSol);

			sourceSol = typename Field<Type>::subField
			(
				completeSourceSol,
				sourceSol.size()
			);

			for
			(
				int slave=Pstream::firstSlave();
				slave<=Pstream::lastSlave();
				slave++
			)
			{
				OPstream::write
				(
					Pstream::blocking,
					slave,
					reinterpret_cast<const char*>
					(
						&(completeSourceSol[procOffsets_[slave]])
					),
					(procOffsets_[slave + 1] - procOffsets_[slave])*sizeof(Type)
				);
			}
		}
		else
		{
			IPstream::read
			(
				Pstream::blocking,
				Pstream::masterNo(),
				reinterpret_cast<char*>(sourceSol.begin()),
				sourceSol.byteSize()
			);
		}
	}
	else
	{
		LUBacksubstitute(*this, pivotIndices_, sourceSol);
	}
}


// ************************************************************************* //
